Few countries in the world are ready to use solar energy.

The weather was so beautiful that we decided to go to the beach. => So _____.           

The film had ____ started by the time we got to the cinema.

In the other two _______, millions of americans enjoy basketball.

Make a non-defining relative clause from the two sentences

Catherine ruled Russia for over 30 years.she made many important changes.

We can hardly use solar energy on cloudy days.             

Solar panels are used for water heating.

Some types of vehicles in Sweden will use solar power by 2015.

If we ___________ soon, the pollution will get much worse.